13121113212303 has 16 divisors (see below), whose sum is σ = 18707329735776. Its totient is φ = 8151341926400.

The previous prime is 13121113212287. The next prime is 13121113212341. The reversal of 13121113212303 is 30321231112131.

It is a cyclic number.

It is not a de Polignac number, because 13121113212303 - 2⁴ = 13121113212287 is a prime.

It is a super-2 number, since 2×13121113212303² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13121113212353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1273642026 + ... + 1273652327.

It is an arithmetic number, because the mean of its divisors is an integer number (1169208108486).

Almost surely, 2^{13121113212303} is an apocalyptic number.

13121113212303 is a deficient number, since it is larger than the sum of its proper divisors (5586216523473).

13121113212303 is a wasteful number, since it uses less digits than its factorization.

13121113212303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2547294474.

The product of its (nonzero) digits is 648, while the sum is 24.

Adding to 13121113212303 its reverse (30321231112131), we get a palindrome (43442344324434).

The spelling of 13121113212303 in words is "thirteen trillion, one hundred twenty-one billion, one hundred thirteen million, two hundred twelve thousand, three hundred three".